1. Bergland, G.D.: A fast Fourier transform algorithm using base 8 iterations. Math. Comput. 22, 275–279 (1968)
2. Bouguezel, S., Ahmad, M.O., Swamy, M.N.S.: A new radix-2/8 FFT algorithm for length-
$$q\times 2^m$$
DFTs. IEEE Trans. Circuits Syst. I Reg. Papers 51, 1723–1732 (2004)
3. Bouguezel, S., Ahmad, M.O., Swamy, M.N.S.: A general class of split-radix FFT algorithms for the computation of the DFT of length-
$$2^m$$
. IEEE Trans. Signal Process. 55, 4127–4138 (2007)
4. Brigham, E.O.: The Fast Fourier Transform and Its Applications. Prentice-Hall, Englewood Cliffs, NJ (1988)
5. Duhamel, P.: Implementation of split-radix FFT algorithms for complex, real, and real-symmetric data. IEEE Trans. Acoust. Speech Signal Process. ASSP-34, 285–295 (1986)